Bogdan-Daniel Deac (born October 8, 2001, Râmnicu Vâlcea) is a great master of the Romanian chess. At the age of 14, 7 months and 27 days, in June 2016, he became the youngest master of Romania at the time of obtaining the title of great master. Also, in 2014, at the age of 12, 10, and 15 days, he was the youngest international master in Romania to obtain the title of international master.

He started playing chess at the age of seven. Currently he activates in two clubs: Chess Club Râmnicu Vâlcea - where he was trained by coach Ioan Varlan - and Ploieşti University Sports Club.

He won the three rules required to win the title of international master at the tournaments: Tradewise Gibraltar (2014) - the first norm, the Chess Championship of Romania (May, 2014) - the second norm (with a score of 7.5 / 11) and the 29th Schwarzach Open (August, 2014) - third. Since he had already 2400 Elo points (required to obtain the title of international master) as early as July 2014, the grand master's title came into force in the ninth round of the tournament (which took place on August 23, 2014) managed to draw in front of the great master Vitaly Kunin.

The rules required for the title of Grand Master were obtained at the tournaments: Zalakaros Open 2015 - first, Graz Open in February, 2016 - second - and Zalakaros Open, June 4, 2016 - third and, implicitly, title of great master.

In 2015 he was named the winner of the Romgaz Kings Tour to the individual, succeeding to defeat the experienced German player Daniel Friedman.

In September 2016 at the International Chess Olympiad in Baku, Azerbaijan, Bogdan-Daniel Deac played for the Romanian team at the third table finishing the tournament with a very good result: 7/10 points (+5-1 = 4). The only defeat suffered - with blacks - by the great Georgian master Levan Pantsulaia.